Improvement in metallic paper-fasteners



G. W. McGiLL.

Metallic Paper-Fas'tener.

Patented April 20, 1875.

Ji'afl Jami J25. .5 6'.

THE GRAPHIC C0.PHQTO#LITH.398 41 PARK PLAGEJLY.

GEORGE W. MCGILL, OF NEW YORK, N. Y.

IMPROVEMENT IN METALLIC PAPER=FASTENERS.

Specification forming part of Letters Patent No. 162,183, dated April20, 1875; application filed September 12, 1874.

To all whom it may concern:

Be it known that I, GEORGE W. McGILL, of the city and county of NewY0rk,in the State of New York, have invented a new and usefulImprovement in Metallic Fasteners; and I do hereby declare the followingto be a full and exact description thereof, reference being had to theaccompanying drawing, making a part of this specification, and to thefigures and letters of reference marked thereon.

Myinvention relates to that class of metallic fastenings known to thetrade as MCGILLS paper-fasteners, wherein the shanks of the fastenersare fiat, and in close contact with each other, and make only a singlehole in the papers which it is designed to connect, the two shanksopening from each other after passing through the papers, and confiningsaidpapers between said shanks and the head of the fastener. I

The mannerin which Icon structthe fastener which I now seek to patent isas follows: I out two blanks of suitable sheet metal of the form shownin Fig. 1. The part marked a of these blanks, and forming their head, isstruck concave. The blanks are placed together, with their heads a bentdown at right angles from their shanks b, so as to form the concave diskshown in Fig. 2. The concave metal cap 0 shown in Fig. 3 is then placedover the concave disk so formed, and secured therein, as shown in Figs.4, 5, and 6, which completes the device. The blanks a l) a b are thussecured together and held in position by the c, and the concave form ofthe cap and of the disk formed by the heads a a of the blanks adds greatadditional strength to the connection.

It is not absolutely necessary that the cap 0 and the disks formed bythe heads a a should be made concave; but I prefer that mode ofconstruction as making a stronger fastener.

The same fastener can be made by running the shanks 1) down through acap or shellpierced as shown in Fig. 7, and turning the shell in on theheads a afrom above, as shownin Figs. 5, 9, and 11; or in. theintroduction of a washer, and turning the cap in under the same, asshown in Fig. 10.

The shanks of the fasteners so formed are run through the papers orother articles to be connected, and are separated on the other side ofthe same, and thus confine said articles between the said shanks and thehead of the fastener, as shown in Fig. 13. v

Having thus fully described the nature, construction, and operation ofmy invention, what I claim as new, and desire to secure by LettersPatent, is

The within described metallic fastener, formed of the two blanks a b a band the cap or shell 0, bent and connected together as herein shown anddescribed, the ends ofthe shanks b b ot'the blanks being in closeparallel contact, and pointed so as to make only a single hole in thearticles it is designed to connect, substantially as described.

GEORGE W. MOGILL. YVitnesses:

P. M. McGrLL,

JOHN W. McGILL.

